System and method for testing compressive strength of mining microcapsule inhibitor

Abstract

The invention discloses a system and method for testing the compressive strength of a mining microcapsule inhibitor. A pressure control part of the test system comprises a hydraulic pump station and a main loading hydraulic cylinder, and the main loading hydraulic cylinder is fixedly mounted on a test platform; the testing part comprises an auxiliary loading hydraulic cylinder and a pressure container, a piston II of the auxiliary loading hydraulic cylinder and a piston I of the main loading hydraulic cylinder are connected into an integrated structure through a piston rod, a carrier liquid injection port is formed in the large cavity end of the auxiliary loading hydraulic cylinder, and the pressure container is communicated and connected with the large cavity end of the auxiliary loading hydraulic cylinder. The pressure container is provided with a microcapsule stopping agent injection port and a mixed liquid discharge port. The detection part comprises a liquid chromatograph which is connected with the mixed liquid outlet through a sample injection pipeline. According to the method, the compressive strength of the microcapsule inhibitor can be accurately measured on the premise of accurately restoring the real compression condition of the microcapsule inhibitor in the high-pressure pipeline conveying process, and a theoretical basis and data support can be provided for determining proper pipeline injection pressure.

Description

technical field [0001] The invention relates to a compressive strength test system and a test method, in particular to a test system and a test method suitable for compressive strength tests of mine microcapsule chemical inhibitors, belonging to the technical field of mine fire extinguishing chemical inhibitors. Background technique [0002] In the process of coal mining, coal spontaneous combustion is one of the main natural disasters that threaten the safety of coal mining. Spontaneous coal combustion not only damages and wastes coal resources, but also produces toxic and harmful gases that pose a serious threat to the physical and mental health of personnel. Under certain conditions, it may even lead to major vicious accidents such as gas and coal dust explosions, which seriously threaten the safe production of mines. [0003] In the prior art, it is usually used to inject flame-retardant slurry, or inject inert gas, or inject flame-retardant foam, or inject flame-retarda...

AI Technical Summary

Problems solved by technology

However, due to the soft texture of the wall of the microcapsule inhibitor, it is very easy to be crushed and ruptured when it is transported in the high-pressure pipeline, which will lead to the loss of the inhibitor core material, thus often failing to achieve the expected inhibitor effect.

At present, there is still no effective and feasible method to accurately measure the compressive strength of microcapsule inhibitors, and conventional uniaxial compressive strength test systems and triaxial compressive test systems for rock samples or coal samples cannot accurately restore microcapsules. The actual pressure of the chemical inhibitor during the high-pressure pipeline transportation process, and the microcapsule inhibitor particles are small, it is difficult to observe its pressure rupture during the test

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